package J1202_night;

public class MyStack {
    public int[] elem;
    public int usedSize;

    public static final int DEFAULT_CAPACITY = 10;
    public MyStack() {
        this.elem = new int[DEFAULT_CAPACITY];
    }
    //入栈 压栈
    public void push(int val) {

    }
    public boolean isFull() {
        return false;
    }
    //出栈
    public void pop() {

    }
    public boolean isEmpty() {
        return false;
    }
}
